upipe-filters/upipe_audio_bar.h header reference
Upipe module generating audio meters subpictures More
Header inclusion
Members
Type
Functions
- int upipe_audiobar_get_alpha(struct upipe *upipe, uint8_t *alpha_p)
- struct upipe_mgr * upipe_audiobar_mgr_alloc(void )
- int upipe_audiobar_set_alpha(struct upipe *upipe, uint8_t alpha)
Description
Upipe module generating audio meters subpictures
Members detail
This macro is declared in upipe-filters/upipe_audio_bar.h source file, line 35.
This macro is declared in upipe-filters/upipe_audio_bar.h source file, line 28.
This enum is declared in upipe-filters/upipe_audio_bar.h source file, line 46.
This enum extends upipe_command with specific commands for upipe_audiobar pipes.
| Identifier | Value | Description |
|---|---|---|
| UPIPE_AUDIOBAR_SENTINEL | UPIPE_CONTROL_LOCAL | |
| UPIPE_AUDIOBAR_GET_ALPHA | unknown | gets the value of the alpha channel (uint8_t *) |
| UPIPE_AUDIOBAR_SET_ALPHA | unknown | sets the value of the alpha channel (uint8_t) |
This function is declared in upipe-filters/upipe_audio_bar.h source file, line 63.
This function gets the value of the alpha channel.
Parameter list:
- upipe: description structure of the pipe
- alpha_p: filled in with the value of the alpha channel
The return value is an error code
This function is declared in upipe-filters/upipe_audio_bar.h source file, line 42.
This function returns the management structure for audiobar pipes.
The return value is pointer to manager
This function is declared in upipe-filters/upipe_audio_bar.h source file, line 76.
This function sets the value of the alpha channel.
Parameter list:
- upipe: description structure of the pipe
- alpha: value of the alpha channel
The return value is an error code